Fatal error

Hello team,
I am getting following fatal error when use “Confirm Forgot Password Block” in page:

PHP Fatal error:  Uncaught Error: Call to undefined function esc_atrr() in wp-content\plugins\front-end-only-users\Shortcodes\Insert_Confirm_Forgot_Password.php:72
Stack trace:
#0 wp-includes\class-wp-block.php(537): Insert_Confirm_Forgot_Password(Array, '', Object(WP_Block))
#1 wp-includes\blocks.php(2191): WP_Block->render()
#2 wp-includes\blocks.php(2243): render_block(Array)
#3 wp-includes\class-wp-hook.php(324): do_blocks('<!-- wp:front-e...')
#4 wp-includes\plugin.php(205): WP_Hook->apply_filters('<!-- wp:front-e...', Array)
#5 wp-includes\blocks\post-content.php(50): apply_filters('the_content', '<!-- wp:front-e...')
#6 wp-includes\class-wp-block.php(537): render_block_core_post_content(Array, '<!-- wp:front-e...', Object(WP_Block))
#7 wp-includes\class-wp-block.php(517): WP_Block->render()
#8 wp-includes\blocks.php(2191): WP_Block->render()
#9 wp-includes\blocks.php(2243): render_block(Array)
#10 wp-includes\block-template.php(260): do_blocks('<!-- wp:templat...')
#11 wp-includes\template-canvas.php(12): get_the_block_template_html()
#12 wp-includes\template-loader.php(106): include('D:\\xampp\\htdocs...')
#13 wp-blog-header.php(19): require_once('D:\\xampp\\htdocs...')
#14 index.php(17): require('D:\\xampp\\htdocs...')
#15 {main}
  thrown in wp-content\plugins\front-end-only-users\Shortcodes\Insert_Confirm_Forgot_Password.php on line 72

please resolve this error as soon as possible because now i can not even edit that page, the error gives even when i have logged in as admin so i have to delete that page.